--- /dev/null	2019-01-28 17:47:21.000000000 +0800
+++ new/src/share/vm/jfr/recorder/jfrEventSetting.cpp	2019-01-28 17:47:21.000000000 +0800
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "jfr/recorder/jfrEventSetting.inline.hpp"
+
+JfrNativeSettings JfrEventSetting::_jvm_event_settings;
+
+bool JfrEventSetting::set_threshold(jlong id, jlong threshold_ticks) {
+  TraceEventId event_id = (TraceEventId)id;
+  assert(bounds_check_event(event_id), "invariant");
+  setting(event_id).threshold_ticks = threshold_ticks;
+  return true;
+}
+
+bool JfrEventSetting::set_cutoff(jlong id, jlong cutoff_ticks) {
+  TraceEventId event_id = (TraceEventId)id;
+  assert(bounds_check_event(event_id), "invariant");
+  setting(event_id).cutoff_ticks = cutoff_ticks;
+  return true;
+}
+
+void JfrEventSetting::set_stacktrace(jlong id, bool enabled) {
+  TraceEventId event_id = (TraceEventId)id;
+  assert(bounds_check_event(event_id), "invariant");
+  setting(event_id).stacktrace = enabled;
+}
+
+void JfrEventSetting::set_enabled(jlong id, bool enabled) {
+  TraceEventId event_id = (TraceEventId)id;
+  assert(bounds_check_event(event_id), "invariant");
+  setting(event_id).enabled = enabled;
+}
+
+#ifdef ASSERT
+bool JfrEventSetting::bounds_check_event(jlong id) {
+  if ((unsigned)id < NUM_RESERVED_EVENTS || (unsigned)id >= MaxTraceEventId) {
+    return false;
+  }
+  return true;
+}
+#endif // ASSERT